30 talik test -6

30 talik test -6

11th Grade

30 Qs

quiz-placeholder

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30 talik test -6

30 talik test -6

Assessment

Quiz

Created by

Bobomurod Abdixashimov

Chemistry

11th Grade

3 plays

Hard

30 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

X2YZ3 birikmasida elementlarning  massa nisbatlari  2:7:9 ga  teng.  Bunga ko‘ra  10  g X,  28 g  Y va 27 g  Z larning reaksiyasidan maksimal  necha gramm  X2YZ3 olish mumkin?

90

72

54

45

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Quyidagi zarrachalar haqidagi noto‘g‘ri  xulosani ko‘rsating.         

A va Y o‘zaro izotop

Y va Z o‘zaro izoton

Y va Z o‘zaro isobar

Z tarkibidagi proton va neytronlar soni teng

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Qaysi javobda elementlar elektromanfiyligi ortib  borish  tartibida joylashgan?

C,  Si,  Ge,  Pb,  Sn

Li,  Na,  K,  Rb,  Cs

I,  Br,  Cl,  F,  H

Na,  Mg,  Al,  P,  Cl

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Xn  ioni tarkibidagi oxirgi elektron  uchun kvant  sonlar  n = 3,  l = 1,  m1 = 0,  ms = +0,5  qiymatga ega.  X element davriy jadvalda 3–davr,  VII A guruhchada joylashgan bo‘lsa,  n ning qiymatini toping.

+1 

+5

+7

+3

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Poloniy  (209)  izotopi  pozitron hosil  qilib parchalandi.  Bunda neytronlar  soni  to ‘rt birlikka ortgan  bo‘lsa,  104,5  mg  poloniy parchalanganda  ajralgan pozitronlar sonini  aniqlang.

0,04 ⦁ Na  

0,02 ⦁ Na

0,002 ⦁ Na

0,004 ⦁ Na

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

NH3 + H+ = NH4+ jarayonda quyidagilardan qaysi biri o'zgaradi?

markaziy atomning oksidlanish darajasi       

markaziy atomning gibridlanishi

zarrachaning fazoviy shakli

markaziy atomning gibridlanishi

 

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Molekular  kristall  panjarali  moddalar qatorini  belgilang.

) NaCl,  F

Si,  Ge

CO2,  Si

S8,  O3

 

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